Patents by Inventor Ryoichiro Kurobe
Ryoichiro Kurobe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8613503Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.Type: GrantFiled: July 10, 2012Date of Patent: December 24, 2013Assignee: Canon Kabushiki KaishaInventors: Ryoichiro Kurobe, Hideo Saikawa
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Patent number: 8425024Abstract: The present invention is, in a liquid ejection apparatus provided with: a movable ejecting portion for ejecting liquid; and an intermediate supply path that is provided so as to supply the liquid contained in a liquid containing body arranged separately from the ejecting portion to the ejecting portion, provided with: a filter chamber that is movable together with the ejecting portion; and a valve unit that is positioned on a downstream side of the filter chamber. The filter chamber is provided with: a filter member arranged in a position distant, by a predetermined distance vertically downward, from the supply port communicatively connected with a downstream end of the intermediate supply path, and a plurality of liquid paths that extend so as to guide the liquid introduced from the supply port toward the filter member.Type: GrantFiled: August 26, 2011Date of Patent: April 23, 2013Assignee: Canon Kabushiki KaishaInventor: Ryoichiro Kurobe
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Publication number: 20120274709Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.Type: ApplicationFiled: July 10, 2012Publication date: November 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: RYOICHIRO KUROBE, HIDEO SAIKAWA
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Patent number: 8246150Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.Type: GrantFiled: March 30, 2009Date of Patent: August 21, 2012Assignee: Canon Kabushiki KaishaInventors: Ryoichiro Kurobe, Hideo Saikawa
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Patent number: 8162445Abstract: An ink jet printing head is attachable to/detachable from an ink jet printing apparatus and includes an electric wiring member formed of a TAB tape to which terminals are provided, and has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided in a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.Type: GrantFiled: August 7, 2009Date of Patent: April 24, 2012Assignee: Canon Kabushiki KaishaInventors: Hiroki Tajima, Minoru Nozawa, Ryoichiro Kurobe
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Publication number: 20120050429Abstract: The present invention is, in a liquid ejection apparatus provided with: a movable ejecting portion for ejecting liquid; and an intermediate supply path that is provided so as to supply the liquid contained in a liquid containing body arranged separately from the ejecting portion to the ejecting portion, provided with: a filter chamber that is movable together with the ejecting portion; and a valve unit that is positioned on a downstream side of the filter chamber. The filter chamber is provided with: a filter member arranged in a position distant, by a predetermined distance vertically downward, from the supply port communicatively connected with a downstream end of the intermediate supply path, and a plurality of liquid paths that extend so as to guide the liquid introduced from the supply port toward the filter member.Type: ApplicationFiled: August 26, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Ryoichiro Kurobe
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Patent number: 8034399Abstract: An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.Type: GrantFiled: April 12, 2010Date of Patent: October 11, 2011Assignee: Canon Kabushiki KaishaInventors: Masako Shimomura, Tadayoshi Inamoto, Kazunari Ishizuka, Ryoichiro Kurobe, Yohei Sato, Akihiko Shimomura, Isao Imamura
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Patent number: 8033652Abstract: A liquid discharge head includes a discharge port array having discharge ports for discharging liquid, a liquid chamber for supplying liquid to the discharge port array, and a liquid introduction passage for introducing liquid to the liquid chamber. A vertical cross section of the liquid chamber has an elongated shape. The liquid introduction passage is wider than the liquid chamber in a width direction of the elongated shape. A communicating portion is longer than a width of the liquid chamber and shorter than the liquid chamber, and is projecting from the liquid introduction passage for the liquid chamber. A bottom of the liquid introduction passage is disposed at a lower position than a top of the liquid chamber in the communicating portion, and a distance between the top and the bottom is longer than half of the width of the liquid chamber.Type: GrantFiled: April 1, 2009Date of Patent: October 11, 2011Assignee: Canon Kabushiki KaishaInventor: Ryoichiro Kurobe
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Publication number: 20100196590Abstract: An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.Type: ApplicationFiled: April 12, 2010Publication date: August 5, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Masako Shimomura, Tadayoshi Inamoto, Kazunari Ishizuka, Ryoichiro Kurobe, Yohei Sato, Akihiko Shimomura, Isao Imamura
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Patent number: 7722917Abstract: An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.Type: GrantFiled: October 5, 2004Date of Patent: May 25, 2010Assignee: Canon Kabushiki KaishaInventors: Masako Shimomura, Tadayoshi Inamoto, Kazunari Ishizuka, Ryoichiro Kurobe, Yohei Sato, Akihiko Shimomura, Isao Imamura
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Publication number: 20090295873Abstract: An ink jet printing head is attachable to/detachable from an ink jet printing apparatus and includes an electric wiring member formed of a TAB tape to which terminals are provided, and has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided in a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.Type: ApplicationFiled: August 7, 2009Publication date: December 3, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Hiroki TAJIMA, Minoru NOZAWA, Ryoichiro KUROBE
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Publication number: 20090251516Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.Type: ApplicationFiled: March 30, 2009Publication date: October 8, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Ryoichiro Kurobe, Hideo Saikawa
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Publication number: 20090244181Abstract: A liquid discharge head includes a discharge port array having discharge ports for discharging liquid, a liquid chamber for supplying liquid to the discharge port array, and a liquid introduction passage for introducing liquid to the liquid chamber. A vertical cross section of the liquid chamber has an elongated shape. The liquid introduction passage is wider than the liquid chamber in a width direction of the elongated shape. A communicating portion is longer than a width of the liquid chamber and shorter than the liquid chamber, and is projecting from the liquid introduction passage for the liquid chamber. A bottom of the liquid introduction passage is disposed at a lower position than a top of the liquid chamber in the communicating portion, and a distance between the top and the bottom is longer than half of the width of the liquid chamber.Type: ApplicationFiled: April 1, 2009Publication date: October 1, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Ryoichiro Kurobe
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Patent number: 7591527Abstract: An ink jet printing head is attachable to/detachable from an ink jet printing apparatus and includes an electric wiring member formed of a TAB tape to which terminals are provided, and has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided in a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.Type: GrantFiled: June 30, 2006Date of Patent: September 22, 2009Assignee: Canon Kabushiki KaishaInventors: Hiroki Tajima, Minoru Nozawa, Ryoichiro Kurobe
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Publication number: 20070008379Abstract: Disclosed is an ink jet printing head attachable to/detachable from an ink jet printing apparatus, which includes an electric wiring member formed of a TAB tape to which terminals are provided, and which has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided to a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.Type: ApplicationFiled: June 30, 2006Publication date: January 11, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hiroki Tajima, Minoru Nozawa, Ryoichiro Kurobe
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Publication number: 20050078143Abstract: An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.Type: ApplicationFiled: October 5, 2004Publication date: April 14, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Masako Shimomura, Tadayoshi Inamoto, Kazunari Ishizuka, Ryoichiro Kurobe, Yohei Sato, Akihiko Shimomura, Isao Imamura
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Patent number: D602076Type: GrantFiled: September 2, 2008Date of Patent: October 13, 2009Assignee: Canon Kabushiki KaishaInventors: Hideo Saikawa, Kazuhiko Miyahara, Shogo Kawamura, Ryoichiro Kurobe
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Patent number: D602521Type: GrantFiled: September 2, 2008Date of Patent: October 20, 2009Assignee: Canon Kabushiki KaishaInventors: Hideo Saikawa, Kazuhiko Miyahara, Shogo Kawamura, Ryoichiro Kurobe